12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182
/*! * Adapted from oak's send.ts at https://github.com/oakserver/oak/blob/main/send.ts and which is licensed * with the MIT license. */
import { GemError } from './error.ts';import { GemContext } from './context.ts';
import { join, extname, contentType, normalize } from './deps.ts';
export interface SendOptions {    root: string,    index?: string,    contentTypes?: Record<string, string>,    hidden?: boolean,}
function isHidden(path: string) {    const pathArr = path.split("/");    for (const segment of pathArr) {        if (segment[0] === "." && segment !== "." && segment !== "..") {            return true;        }        return false;    }}
export async function send(    { response }: GemContext,    path: string,    opts: SendOptions = { root: "" }) {    const { root, hidden = false, index } = opts;    const normalPath = normalize(path);    if (normalPath.startsWith('..')) {        throw new GemError(59, 'Path must not travel up from the root directory');    }
    let pathToRequest = join(root, normalPath);
    if (isHidden(pathToRequest) && !hidden) {        return;    }
    try {        const stat = await Deno.stat(pathToRequest);
        if (stat.isDirectory && index) {            pathToRequest = join(pathToRequest, index);            if (!(await Deno.stat(pathToRequest)).isFile) {                throw new Error();            }        }    } catch (_) {        throw new GemError(51);    }
    const additionalContentTypes: Record<string, string | undefined> = {        '.gmi': 'text/gemini; lang=en',        '.gemini': 'text/gemini; lang=en',    }
    const meta = opts.contentTypes?.[extname(pathToRequest)]        ?? additionalContentTypes?.[extname(pathToRequest)]        ?? contentType(pathToRequest)        ?? 'text/plain';
    let contents;    try {        contents = await Deno.readFile(pathToRequest);    } catch (e) {        if (e instanceof Deno.errors.NotFound || (e instanceof Error && e.message.includes('os error 21'))) {            throw new GemError(51);        } else {            throw e;        }    }
    response.status = 20;    response.meta = meta;    response.body = contents;}